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| Anything that occupies space and has mass |
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| any substance that cannot be broken down into another substance via chemical reaction |
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| chemical substance consisting of two or more different chemical elements that can be separated into simpler substances |
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| number of unpaired electrons needed to complete an atom's valence shell |
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| atom with a stable valence shell (8 electrons) and is relatively un reactive |
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| An atom that has an irregular amount of neutrons that affects its atomic mass |
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Carbon
Hydrogen
Oxygen
Nitrogen |
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| Chromium, cobalt, copper, iron, manganese, magnesium, molybdenum, selenium, zinc, and other elements that occur in very small amounts (usually less than 1 to 10 parts per million) as constituents of living organisms, and are necessary for their growth, development, and health. Whereas the shortage of trace elements in the body may result in stunted growth or even death, their presence in higher amounts is also harmful. |
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| smallest unit of life that still retains the properties of an element |
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components of an atom:
Proton, Neutron, Electron |
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| electron containing shells |
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| number of protons or electrons of that element |
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| Number of protons and neutrons |
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| Atomic mass - atomic number |
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Electron sharing
two non-metals
Polar and non-Polar |
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Metal and non-Metal
Give (metals) and Take (non-metal) |
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| The attraction of an electron to the nucleus (neutrons) of an atom |
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| compounds in a chemical formula that react to form a product |
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| end substances after a chemical reaction |
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